Hesitation problem at various speeds (TSB info post #159)
12-21-20, 03:34 PM
#1516
Lexus Test Driver
It won't ever default to SPORT due to the drag on MPG and CAFE ratings.
12-22-20, 09:06 AM
#1518
12-22-20, 09:15 AM
#1519
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12-27-20, 05:49 PM
#1522
Driver School Candidate
Join Date: Dec 2020
Location: VA
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2019 RX 350 shifting issues
My RX cant seem to make up its mind what gear it needs to be in. Most of the time it feels like it is in to high of a gear and wants to lag. And it will run away down hill in cruise control then try to catch itself by downshifting. Anybody else experiencing this?
12-27-20, 06:04 PM
#1523
Lexus Test Driver
Try SPORT mode where it will be less inclined to hold onto high gears.
12-27-20, 11:38 PM
#1525
Yeah, it appears a couple of other folks have noticed: https://www.clublexus.com/forums/rx-...ost-159-a.html
01-03-21, 02:34 PM
#1528
More than a year ago I had my dealer updated the ECU in the hope of improving the surge hesitation issue but it didn't go completely away. From time to time I do experience it in normal driving mode. So last week I had a chance to take it in for the fuel pump recall(btw, no gas smell afterward so they did a good job) replacement. I told the service advisor about the issue and they updated my ECU to a newer version. So far I see improvement. We'll see how it goes in near future.
Before update:
896650E48200
896630EA4200
After the update:
896650E48300
896630EA4300
Before update:
896650E48200
896630EA4200
After the update:
896650E48300
896630EA4300
01-03-21, 05:46 PM
#1529
Driver School Candidate
I just went in to get some work done and told them about the hesitation issue. They updated the firmware (TSB l-sb-0032-19 for reference) and after wards I filled it up with premium gas. It seems to be doing okay so far although I haven't put in a lot of miles yet. There's still some hesitation when flooring but it's much more tolerable than having the car jerk forward and back.
On another note, does anyone else notice when sitting in the back row that you feel sensitive to the acceleration/braking? I sat in the backseat while my dad drove and felt like I was getting pushed hard when accelerating and pulled during brakes. He doesn't have a heavy foot either. It just doesn't feel like a smooth ride sitting in the back.
For reference, I have a 2017 rx f sport. I wish it drove more like the 2020 es loaner I had. Such a smooth ride with no hesitation in the acceleration - exactly what I would expect for a lexus.
On another note, does anyone else notice when sitting in the back row that you feel sensitive to the acceleration/braking? I sat in the backseat while my dad drove and felt like I was getting pushed hard when accelerating and pulled during brakes. He doesn't have a heavy foot either. It just doesn't feel like a smooth ride sitting in the back.
For reference, I have a 2017 rx f sport. I wish it drove more like the 2020 es loaner I had. Such a smooth ride with no hesitation in the acceleration - exactly what I would expect for a lexus.
01-03-21, 05:51 PM
#1530
Lexus Test Driver
I just went in to get some work done and told them about the hesitation issue. They updated the firmware (TSB l-sb-0032-19 for reference) and after wards I filled it up with premium gas. It seems to be doing okay so far although I haven't put in a lot of miles yet. There's still some hesitation when flooring but it's much more tolerable than having the car jerk forward and back.
On another note, does anyone else notice when sitting in the back row that you feel sensitive to the acceleration/braking? I sat in the backseat while my dad drove and felt like I was getting pushed hard when accelerating and pulled during brakes. He doesn't have a heavy foot either. It just doesn't feel like a smooth ride sitting in the back.
For reference, I have a 2017 rx f sport. I wish it drove more like the 2020 es loaner I had. Such a smooth ride with no hesitation in the acceleration - exactly what I would expect for a lexus.
On another note, does anyone else notice when sitting in the back row that you feel sensitive to the acceleration/braking? I sat in the backseat while my dad drove and felt like I was getting pushed hard when accelerating and pulled during brakes. He doesn't have a heavy foot either. It just doesn't feel like a smooth ride sitting in the back.
For reference, I have a 2017 rx f sport. I wish it drove more like the 2020 es loaner I had. Such a smooth ride with no hesitation in the acceleration - exactly what I would expect for a lexus.
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Andrew2020 (01-03-21)